前言

  Qt使用一些压缩解压功能，选择libzip库，libzip库比较原始，也是很多其他库的基础支撑库。

libzip

  libzip是一个C库，用于读取，创建和修改zip档案。可以从数据缓冲区，文件或直接从其他zip归档文件直接复制的压缩数据中添加文件。在不关闭存档的情况下所做的更改可以还原。
  当前版本是1.7.3，于2020年7月15日发布。
  官网：https://libzip.org/
  QQ群：1047134658（点击“文件”搜索“libzip”，群内与博文同步更新）

libzip编译

步骤一：解压

步骤二：Cmake配置（vs2017 x64版本）

  需要zlib，之前已经编译过vs2017 x64版本的zlib了，导入再配置

步骤三：生成工程

步骤四：打开VS2017编译

步骤五：安装install

模块化

补充：查看命令行工具帮助和源码辅助开发

ziptool.exe -h
usage: ziptool.exe [-ceghnrst] [-l len] [-o offset] archive command1 [args] [command2 [args] ...]

Supported options are:
        -c              check consistency
        -e              error if archive already exists (only useful with -n)
        -g              guess file name encoding (for stat)
        -h              display this usage
        -l len          only use len bytes of file
        -n              create archive if it doesn't exist
        -o offset       start reading file at offset
        -r              print raw file name encoding without translation (for stat)
        -s              follow file name convention strictly (for stat)
        -t              disregard current archive contents, if any

Supported commands and arguments are:
        add name content
            add file called name using content

        add_dir name
            add directory

        add_file name file_to_add offset len
            add file to archive, len bytes starting from offset

        add_from_zip name archivename index offset len
            add file from another archive, len bytes starting from offset

        cat index
            output file contents to stdout

        count_extra index flags
            show number of extra fields for archive entry

        count_extra_by_id index extra_id flags
            show number of extra fields of type extra_id for archive entry

        delete index
            remove entry

        delete_extra index extra_idx flags
            remove extra field

        delete_extra_by_id index extra_id extra_index flags
            remove extra field of type extra_id

        get_archive_comment
            show archive comment

        get_extra index extra_index flags
            show extra field

        get_extra_by_id index extra_id extra_index flags
            show extra field of type extra_id

        get_file_comment index
            get file comment

        get_num_entries flags
            get number of entries in archive

        name_locate name flags
            find entry in archive

        print_progress
            print progress during zip_close()

        rename index name
            rename entry

        replace_file_contents index data
            replace entry with data

        set_archive_comment comment
            set archive comment

        set_extra index extra_id extra_index flags value
            set extra field

        set_file_comment index comment
            set file comment

        set_file_compression index method compression_flags
            set file compression method

        set_file_dostime index time date
            set file modification time and date (DOS format)

        set_file_encryption index method password
            set file encryption method

        set_file_mtime index timestamp
            set file modification time

        set_file_mtime_all timestamp
            set file modification time for all files

        set_password password
            set default password for encryption

        stat index
            print information about entry


Supported flags are:
        0       (no flags)
        C       ZIP_FL_NOCASE
        c       ZIP_FL_CENTRAL
        d       ZIP_FL_NODIR
        l       ZIP_FL_LOCAL
        u       ZIP_FL_UNCHANGED

Supported compression methods are:
        default
        deflate
        store

Supported encryption methods are:
        none
        AES-128
        AES-192
        AES-256
        PKWARE

The index is zero-based.